C39. The first AKB48 single released after you became a *48 fan, and what you thought about it.
Technically, I've been listening to their music from the very beginning. I liked Sakura no Hanabiratachi and kept getting their music the whole time they were releasing lol, even subgroups and stuff. I really liked that they had an old school idol sound, which was of course due to Aki-P's production style in the beginning.